Product Overview
Motorola MC14094BCP CMOS Serial-In Parallel-Out Shift Register with Data Latches, 16-Pin Plastic DIP
Condition
Unused new old stock (NOS). Markings legible: Motorola logo, MC14094BCP. Sold each.
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Product Overview
Motorola's MC14094BCP is an 8-stage shift/store register in the 4000-series CMOS family: serial data in, eight parallel outputs, a data latch behind every stage and a three-state buffer on every output. The CP suffix is Motorola's plastic DIP, case 648, through-hole with 16 pins.
Key Features
- Data shifts on the positive clock transition; each stage is latched on the negative transition of the strobe input
- Three-state parallel outputs Q1 through Q8; a logic Low on Output Enable puts them in the high-impedance state
- Two serial outputs: QS for high-speed cascading, Q'S shifted on the following negative clock edge for low-speed cascading
- Pin assignment: Strobe 1, Data 2, Clock 3, VSS 8, QS 9, Q'S 10, Output Enable 15, VDD 16
- Drives two low-power TTL loads or one low-power Schottky TTL load over the rated temperature range
- Input diode protection; DC supply absolute maximum -0.5 to +18.0 V
- Power dissipation 500 mW per package; operating range -55 to 125 C
- Pin-for-pin compatible with the CD4094B
Applications
- Driving eight LEDs, relay drivers or display segments from three microcontroller pins: data, clock and strobe.
- Chaining several registers off QS so one serial stream feeds 16, 24 or more outputs.
- Sharing a parallel bus with other devices by pulling Output Enable low when this chip should step off the lines.
- Re-populating a socket on an older control, test or synthesizer board built around the 4094.
Frequently Asked Questions
Do the serial outputs go high-impedance with the parallel outputs?
No. Output Enable controls only Q1 through Q8. QS and Q'S keep shifting with the clock, so a cascaded chain keeps moving data even while this chip's parallel outputs are off the bus.
Will it replace a CD4094B?
Yes. Motorola specifies the MC14094B as pin-for-pin compatible with the CD4094B, with Strobe on pin 1 and Output Enable on pin 15.
Quantity pricing applies: the price-break table on this page shows the price per piece at every step.
The latch is the quiet trick in the 14094: the outputs hold the last byte steady while the next one walks through the register behind them, and nothing changes until the strobe says so. A display or a bank of relays never sees the shuffle, only the answer.
